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o- nitrophenol is steam volatile while p...

o- nitrophenol is steam volatile while p-nitrophenol is not. Discuss.

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In o-nitrophenol, intarmolecular hydrogen bonding is present while intermolecular hydrogen is present in the molecules of p-nitrophenol. Energy is needed to overcome attractive forces in the molecules of p-nitrophenol but no such energy is required in ase of molecules in o-nitrohenol. This means that the boiling point of o-nitrophenol is less and is steam volatile while than of p-nitrophenol is more and is, therefore, non-volatile in steam.
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Explore conceptually related problems

Explain the following : (i) o - nitrophenol is more acidic than meta - nitrophenol. (ii) Phenol gets coloured on long standing. (iii) o - nitrophenol is steam volatile while, p -nitro - phenol is not. (iv) Phenol does not undergo substitutions at the carbon oxygen bond.

Give reason in one or two sentences form the following: 'o-nitrophenol is steam volatile, whereas p-nitrophenol is not'.

Knowledge Check

  • Assertion : A mixture of o-nitrophenol and p-nitrophenol can be separated by steam distillation. Reason : p-Nitrophenol is steam volatile while o-nitrophenol is not steam volatile.

    A
    If both assertion and Reason are true, and reason is the true explanation of the assertion.
    B
    If both assertion and reason are true, but reason is not the true explanation of the assertion.
    C
    If assertion is true, but reason is false
    D
    If both assertion and reason are false

  • Assertion (A) o-and p-nitrophenol can be separated by steam distillation. Reason (R ) o-Nitrophenol is steam volatile whereas p-nitrophenol is not steam volatile.

    A
    Both A and R are true and R is the correct explanation of A
    B
    Both A and R are true but R is not a correct explation of A
    C
    A is true but R is false
    D
    A is false but R is true

  • (A) A mixture of o-nitrophenol and p-nitrophenol can be separated by steam distillation. (R) o-nitrophenol is steam volatile but p-nitrophenol is not though both are water soluble.

    A
    Statement-1 (A) and statement-2 (R) are true and statement-2 (R) is the correct explanation for statement-1 (A).
    B
    Statement-1 (A) and statement-2 (R) are true and statement-2 (R) is not the correct explanation for statement-1 (A)
    C
    Statement-1 (A) is true, statement-2 (R) is false
    D
    Statement-1 (A) is false, statement-2 (R) is true

    • Similar Questions

    Explore conceptually related problems

    Account for the following: o-nitrophenol is more steam volatile than p-nitrophenol.

    Explain why o-hydroxybenzaldehyde is liquid at room temperature while p-hydroxybenzaldehyde is a high melting solid . or Why o-nirophenol is volatile in steam but p-nitrophenol is not ?

    Each question has choices (a), (b), (c ) and (d) out of which ONLY ONR is correct. STATEMENT -1 : A mixture of o-nitrophenol and p-nitrophenol can be separated by steam distillation. STATEMENT - 2 : o-nitrophenol is steam volatile but p-nitrophenol is not though both are water soluble.

    o-nitrophenol is more volatile than p-nitrophenol it is due to

    This section contains Assertion and Reason type question. Each question has 4 choices (1), (2), (3) and (4), out of which only one is correct. Assertion (A) o-nitrophenol is less volatile than p-nitrophenol. Reason(R) There is intermolecular hydrogen bonding in o-nitrophenol and intramolecular hydrogen bonding in p-nitrophenol.

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